Frequency spectrum collaboration sharing method in cognitive radio

Abstract

The invention discloses a multi-frequency spectrum collaboration sharing method in a cognitive radio. The method comprise the following steps of: forming a cognitive radio network through a plurality of frequency spectrum owners and a plurality of secondary users, and specifying a network access protocol; distributing alternative collaboration objects from the secondary users to the main users; selecting a plurality of secondary users meeting conditions as final collaboration objects by the main users with the distributed collaboration objects; and determining the duration of a renting frequency spectrum according to the level of relay power provided by the collaboration objects. According to the frequency spectrum collaboration and sharing method in the cognitive radio, on one hand, the secondary users are endowed with rights to select to collaborate or not, on the other hand, the fairness of the main users is ensured, thereby obtaining a stable global sub-optimal solution in the frequency spectrum collaboration sharing.

Description

technical field [0001] The present invention relates to a method in the technical field of communication, in particular to a method for cooperative sharing of spectrum between a primary user and a secondary user in a cognitive radio. Background technique [0002] On the one hand, with the widespread use of radio, spectrum occupation makes spectrum resources more and more precious. On the other hand, with the continuous development of radio technology, more flexible access methods are provided for mobile users. In a cognitive radio network, it is generally divided into frequency band owners (such as various telecom operators), primary users (PU) and secondary users (SU). Primary users are authorized users who can access the channel at any time without any interference. Secondary users are unauthorized users who do not have access and service quality guarantees, but have greater flexibility to choose different operators to access. Therefore, based on cognitive radio technol...

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Problems solved by technology

Secondary users are unauthorized users and do not have access and service quality guarantees, but have greater flexibility to choose different operators to access

[0004] However, the above technology has not considered the problem that the relay power of the SU is variable.

In addition, in their work, the SU's opportunity to use spectrum resources is irrelevant to the contribution made by its relay to the PU, and the SU selected by the PU as the relay has no right to choose whether to cooperate or not, that is, Once selected, SUs are forced to help PUs relay whether they want to or not, these assumptions don't match reality

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